If you're looking for a happy medium, why not take a look at this Marni Turtleneck. While the price is very reasonable, this piece is an easy wardrobe update. Also look at this Marni Cardigan. It's an attractive option both price and quality-wise.
If you want to splurge on a luxury piece, then you won't be disappointed if you check out this Marni Cardigan. It's an expensive but smart option.